OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application5 p% b% e2 G: M3 [+ ]+ L$ N+ Z0 a. t! c
/*! C& i7 X0 ~" t3 B; M; G
* edma_test.c! c, G4 M- l7 A& L. V6 l* I& m5 a
*
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* brief EDMA3 Test Application% T$ n3 K! R' k
*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE# r% r5 {. O! G
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT3 E" Z' U6 e+ B4 P7 P* R) \
* TO CHANGE.3 {' k& D6 @& U
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 ?, {- _% B0 ]; a
*" a* c! i! U( f% w
* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as' h9 [/ `$ D7 ]* S. A `; [
* published by the Free Software Foundation version 2.8 w+ i9 G% ~+ x1 l4 P
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty& J& m2 O+ h# O0 @% [5 Q1 p& a! {
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.' E$ n/ c8 O/ u0 H- i. s0 [
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#include <linux/module.h>
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#include <linux/init.h>. p: e) S0 Q! H" `- s* p- P
#include <linux/errno.h>. z$ ^" b2 C5 ~" Y7 R3 O
#include <linux/types.h>
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#include <linux/interrupt.h># h8 D- ?; v/ B+ x1 h; g9 P
#include <asm/io.h>
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#include <linux/moduleparam.h>/ r% @' Z4 k/ X% y
#include <linux/sysctl.h>. [9 I9 r/ }# D- Q: K3 n0 l# W
#include <linux/mm.h>" L+ }3 V+ D; ]8 ~) W+ w" Z1 c3 l
#include <linux/dma-mapping.h>' X. \3 F& z1 H( ?5 t7 r3 {# j
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#include <mach/memory.h>0 T1 \1 h5 s9 D6 p$ q8 f
#include <mach/hardware.h>, b! @1 N5 E1 T r' K* W* Z# s/ X. k
#include <mach/irqs.h>$ o& i- t3 D( `" J
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG: C' N( j4 N) a, ?' E3 ?1 v& b" g
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)( s6 X; U7 [$ \: A
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else1 {+ y( D3 ?! M; {- T# K L3 w
#define DMA_PRINTK( x... )3 `! P+ y' o+ N! ^8 A: k& S/ @
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)0 ]/ z- [ `$ W. k _
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20( b. N& p& n9 o: ~
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;/ Z5 v% n2 X7 l0 i. w
static volatile int irqraised2 = 0;) `' S: _ T6 ~" y
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ w! D0 t/ b+ b$ ?
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% d3 t. }, [* G
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dma_addr_t dmaphyssrc1 = 0;7 s: j f2 E# ]" z( j/ c. S: @
dma_addr_t dmaphyssrc2 = 0;4 b& K" e% b9 Q& R- X( K
dma_addr_t dmaphysdest1 = 0;- s% P- k! F9 i/ B. K, H! h, P
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;- E% T. s/ k2 {; B8 B
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static int acnt = 512;1 h: o! W5 U* ]
static int bcnt = 8;
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static int ccnt = 8;6 z/ O7 Z: e# z9 H1 _
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module_param(acnt, int, S_IRUGO);) f- t/ |* Y4 h. B8 n0 {2 b
module_param(bcnt, int, S_IRUGO);, j R) U d) [1 _, l- K5 F; X0 [
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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